static gint mp3_open(void)
{
int imp3;
gfp = lame_init();
if (gfp == NULL)
return 0;
/* setup id3 data */
id3tag_init(gfp);
if (tuple) {
/* XXX write UTF-8 even though libmp3lame does id3v2.3. --yaz */
lameid3.track_name = tuple_get_str (tuple, FIELD_TITLE, NULL);
id3tag_set_title(gfp, lameid3.track_name);
lameid3.performer = tuple_get_str (tuple, FIELD_ARTIST, NULL);
id3tag_set_artist(gfp, lameid3.performer);
lameid3.album_name = tuple_get_str (tuple, FIELD_ALBUM, NULL);
id3tag_set_album(gfp, lameid3.album_name);
lameid3.genre = tuple_get_str (tuple, FIELD_GENRE, NULL);
id3tag_set_genre(gfp, lameid3.genre);
lameid3.year = str_printf ("%d", tuple_get_int (tuple, FIELD_YEAR, NULL));
id3tag_set_year(gfp, lameid3.year);
lameid3.track_number = str_printf ("%d", tuple_get_int (tuple, FIELD_TRACK_NUMBER, NULL));
id3tag_set_track(gfp, lameid3.track_number);
if (force_v2_val) {
id3tag_add_v2(gfp);
}
if (only_v1_val) {
id3tag_v1_only(gfp);
}
if (only_v2_val) {
id3tag_v2_only(gfp);
}
}
/* input stream description */
lame_set_in_samplerate(gfp, input.frequency);
lame_set_num_channels(gfp, input.channels);
/* Maybe implement this? */
/* lame_set_scale(lame_global_flags *, float); */
lame_set_out_samplerate(gfp, out_samplerate_val);
/* general control parameters */
lame_set_bWriteVbrTag(gfp, toggle_xing_val);
lame_set_quality(gfp, algo_quality_val);
if (audio_mode_val != 4) {
AUDDBG("set mode to %d\n", audio_mode_val);
lame_set_mode(gfp, audio_mode_val);
}
lame_set_errorf(gfp, lame_debugf);
lame_set_debugf(gfp, lame_debugf);
lame_set_msgf(gfp, lame_debugf);
if (enc_toggle_val == 0 && vbr_on == 0)
lame_set_brate(gfp, bitrate_val);
else if (vbr_on == 0)
lame_set_compression_ratio(gfp, compression_val);
/* frame params */
lame_set_copyright(gfp, mark_copyright_val);
lame_set_original(gfp, mark_original_val);
lame_set_error_protection(gfp, error_protect_val);
lame_set_strict_ISO(gfp, enforce_iso_val);
if (vbr_on != 0) {
if (vbr_type == 0)
lame_set_VBR(gfp, 2);
else
lame_set_VBR(gfp, 3);
lame_set_VBR_q(gfp, vbr_quality_val);
lame_set_VBR_mean_bitrate_kbps(gfp, abr_val);
lame_set_VBR_min_bitrate_kbps(gfp, vbr_min_val);
lame_set_VBR_max_bitrate_kbps(gfp, vbr_max_val);
lame_set_VBR_hard_min(gfp, enforce_min_val);
}
/* not to write id3 tag automatically. */
lame_set_write_id3tag_automatic(gfp, 0);
if (lame_init_params(gfp) == -1)
return 0;
/* write id3v2 header */
imp3 = lame_get_id3v2_tag(gfp, encbuffer, sizeof(encbuffer));
if (imp3 > 0) {
write_output(encbuffer, imp3);
id3v2_size = imp3;
}
else {
id3v2_size = 0;
}
write_buffer = NULL;
write_buffer_size = 0;
return 1;
}
void lame_encoder_impl_internal::set_compression_ratio(float _CompressionRatio)
{
int lameRet = lame_set_compression_ratio(m_Lame.get(), _CompressionRatio);
DT_LAME_CHECK_ERR(lameRet);
}
bool OutLame::apply_profile() {
if(enc_flags) lame_close(enc_flags);
enc_flags = lame_init();
lame_set_errorf(enc_flags,(void (*)(const char*, va_list))error);
lame_set_debugf(enc_flags,(void (*)(const char*, va_list))func);
lame_set_msgf(enc_flags,(void (*)(const char*, va_list))act);
lame_set_num_samples(enc_flags,OUT_CHUNK);
lame_set_num_channels(enc_flags,2); // the mixed input stream is stereo
lame_set_in_samplerate(enc_flags,SAMPLE_RATE); // the mixed input stream is 44khz
lame_set_error_protection(enc_flags,1); // 2 bytes per frame for a CRC checksum
lame_set_compression_ratio(enc_flags,0);
lame_set_quality(enc_flags,2); // 1..9 1=best 9=worst (suggested: 2, 5, 7)
// lame_set_VBR(enc_flags,vbr_abr);
/* BITRATE */
lame_set_brate(enc_flags,bps());
Shouter *ice = (Shouter*)icelist.begin();
while(ice) {
char tmp[256];
snprintf(tmp,256,"%u",bps()); ice->bps( tmp );
snprintf(tmp,256,"%u",freq()); ice->freq( tmp );
snprintf(tmp,256,"%u",channels()); ice->channels( tmp );
ice = (Shouter*)ice->next;
}
lame_set_out_samplerate(enc_flags,freq());
/* CHANNELS
mode 2 (double channel) is unsupported */
int mode;
switch( channels() ) {
/* 0,1,2,3 stereo,jstereo,dual channel,mono */
case 1: mode = 3; break;
case 2: mode = 1; break;
default: mode = 3; break;
}
lame_set_mode(enc_flags,(MPEG_mode_e)mode);
/* in case of VBR
func("reversed quality is %i, guessed bps %i",(int)fabs( 10 - quality()),bps());
lame_set_VBR_q(enc_flags,(int)fabs( 10 - quality() ));
lame_set_VBR_mean_bitrate_kbps(enc_flags,bps());
*/
/* lame chooses for us frequency filtering when values are 0 */
lame_set_lowpassfreq(enc_flags,lowpass());
lame_set_highpassfreq(enc_flags,highpass());
int res = lame_init_params(enc_flags);
if(res<0) {
error("lame_init_params failed");
lame_close(enc_flags);
enc_flags = NULL;
}
return (res<0)?false:true;
}
